Blogging, tweeting in class....

Some interesting posts on the topic:
http://www.thethinkingstick.com/a-blog-post-a-tweet-a-connection

http://www.thethinkingstick.com/twitter-google-notebook-and-earcos

http://www.thethinkingstick.com/twitter-a-different-conversation

Using Twitter in the classroom:
http://www.emergingedtech.com/2009/06/6-examples-of-using-twitter-in-the-classroom/